平台订单列表：锁定订阅时提供一键续费下单入口

resources/views/admin/platform_orders/index.blade.php

@@ -42,6 +42,29 @@
                 <span class="muted">（订阅ID：{{ $currentSubscription->id }}）</span>
             </div>
             <div class="muted muted-xs">提示：本页快捷筛选会保留该订阅ID；右上角“新建平台订单”会自动预填订阅ID。</div>
+
+            @php
+                // 锁定订阅场景下的一键续费下单入口（更贴近收费闭环 SOP）
+                $renewRemarkPrefix = (string) config('saasshop.platform_orders.renewal_order_remark_prefix', '来自订阅：');
+                $renewCreateQuery = [
+                    'order_type' => 'renewal',
+                    'site_subscription_id' => $currentSubscription->id,
+                    'merchant_id' => $currentSubscription->merchant_id,
+                    'plan_id' => $currentSubscription->plan_id,
+                    'quantity' => 1,
+                    'remark' => $renewRemarkPrefix . $currentSubscription->subscription_no,
+                    'back' => $selfWithoutBack,
+                ];
+                // plan_id 允许为空：为空时不传，避免 create 默认值误选 0
+                if (!(int) $currentSubscription->plan_id) {
+                    unset($renewCreateQuery['plan_id']);
+                }
+                $renewCreateUrl = '/admin/platform-orders/create?' . \Illuminate\Support\Arr::query($renewCreateQuery);
+            @endphp
+
+            <div class="mt-10">
+                <a href="{!! $renewCreateUrl !!}" class="btn">为该订阅创建续费订单</a>
+            </div>
         </div>
     @endif
 </div>